上海第(9)层减压降水悬挂式隔水帷幕深度的设计方法  

Design Method for Depth of Suspended Waterproof Curtain for Decompression and Precipitation on Deep Soil Layer(9) in Shanghai

作　　者：杨洪杰[1] 崔永高 孙建军 YANG Hongjie;CUI Yonggao;SUN Jianjun(Shanghai Shentong Metro Group Co.,Ltd.,Shanghai 201103,China;Environmental Geotechnique Center,Shanghai Guanglian Geotechnical&Environmental Co.,Ltd.,Shanghai 200444,China;Shanghai Technology Research Center of Groundwater Comprehensive Treatment,Shanghai 200444,China;Shanghai Tunnel Engineering&Transit Design Research Institute,Shanghai 200235,China)

机构地区：[1]上海申通地铁集团有限公司,上海201103 [2]上海广联环境岩土工程股份有限公司环境岩土中心,上海200444 [3]上海地下水综合治理技术研究中心,上海200444 [4]上海隧道工程轨道工程设计研究院,上海200235

出　　处：《建筑施工》2022年第8期1758-1760,共3页Building Construction

基　　金：上海市发展和改革委员会科研项目课题(2017HZDZX02);上海市科学技术委员会科研项目课题(18DZ1201103);上海申通地铁集团有限公司科研项目课题(轨18-KY-2017-003)。

摘　　要：针对上海地区超深基坑开挖中涉及的第(9)层减压降水问题,基于现场试验,分析了短滤管减压井结构、深层变形监测、降水沉降修正系数、隔水帷幕深度比选等关键技术要点,提出了一套完整的悬挂式隔水帷幕深度设计方法。新方法应用于上海张江国家科学中心硬X射线激光装置的5号竖井工程实践,取得较好的控制效果。对第(9)层悬挂式隔水帷幕深度设计和环境风险控制的相关技术进行了讨论,并提出了今后的发展方向。Aiming at the problem of decompression and precipitation on deep soil layer(9) involved in the excavation of ultra deep foundation pit in Shanghai, based on the onsite test, the key technical points such as the structure of short filter tube relief well, deep deformation monitoring, precipitation settlement correction coefficient, comparison and selection of water curtain depth are analyzed, and a complete set of design method for the depth of suspended water curtain is proposed. The new method is applied to the engineering practice of shaft 5 of the hard X-ray laser device in Zhangjiang National Science Center in Shanghai, and achieves good control results. The related technologies of the depth design and environmental risk control of the deep soil layer(9) suspended waterproof curtain are discussed, and the future development direction is put forward.

关 键 词：超深基坑 承压水控制 悬挂式隔水帷幕 深度设计 

分 类 号：TU753[建筑科学—建筑技术科学]